Alex Marie Swimsuits — Resort-Ready Styles

★★★★★4.8· loved by thousands

Our classic one-piece brings you the elegance of a timeless silhouette with modern performance fabric. We built this suit with chlorine-resistant nylon-spandex blend that holds its shape season after season, so you can wear it poolside or on vacation without worry.

Chlorine-resistant nylon-spandex blend retains color and elasticityPrincess seams shape the torso for a flattering vertical lineBuilt-in soft cups with adjustable straps for customized supportDouble-needle stitching on all seams prevents fraying
Add to Your CollectionView Details
Alex Marie Classic One-Piece Swimsuit product image
Alex Marie Classic One-Piece Swimsuit product image
Alex Marie Classic One-Piece Swimsuit product image
1
Chlorine-resistant nylon-spandex blend retains color and elasticity
Designed to hold up to real daily wear.
2
Princess seams shape the torso for a flattering vertical line
Designed to hold up to real daily wear.
3
Built-in soft cups with adjustable straps for customized support
Designed to hold up to real daily wear.
4
Double-needle stitching on all seams prevents fraying
Designed to hold up to real daily wear.
Why it works
Fabric Technology & Construction

Every Alex Marie swimsuit starts with fabric engineered to withstand the demands of chlorine, saltwater, and UV exposure. We source nylon-spandex and polyester-elastane blends that hold their color through dozens of washes and swimming sessions.

Fabric Technology & Construction
Sizing & Fit Guidance
The details

Sizing & Fit Guidance

Understanding Alex Marie Swimsuit Sizes

Our size chart is based on bust, waist, and hip measurements rather than standard dress sizes, because swimwear fit depends on precise body dimensions. We recommend measuring yourself in underwear using a soft tape measure held snug but not tight.

For one-piece suits and tankini tops, your bust measurement determines the size. If you fall between sizes, we suggest sizing up for comfort—the spandex content provides plenty of hold without needing a tighter fit. Our adjustable straps give you several inches of range to fine-tune the shoulder fit once the suit arrives.

Care Instructions for Long-Lasting Wear
The details

Care Instructions for Long-Lasting Wear

Proper care extends the life of your Alex Marie swimsuit significantly. After each wear, rinse the suit in cool fresh water to remove chlorine, salt, sunscreen, and body oils. Even if you only wore it for an hour, this quick rinse prevents buildup that degrades elastic fibers.

Wash your swimsuit by hand using a mild detergent made for delicates. Avoid regular laundry detergent, which often contains enzymes and brighteners that break down spandex. Gently squeeze soapy water through the fabric, then rinse until the water runs clear.

The specs

Fabric & construction highlights

Chlorine-resistant nylon-spandex blend retains color and elasticityYes
Princess seams shape the torso for a flattering vertical lineYes
Built-in soft cups with adjustable straps for customized supportYes
Double-needle stitching on all seams prevents frayingYes
Fully lined interior for comfort and modestyYes
UPF 50+ sun protection woven into the fabricYes

Complete the look

Complete Your Beach Bag


Customer reviews

Customer reviews

4.8
★★★★★
Verified reviews
Read on Amazon →
Customer photo
★★★★★
Finally a suit that fits my body
I’ve been searching for a one-piece that doesn’t gap at the bust or ride up when I swim. This suit stays put all day. The adjustable straps let me get the exact fit I need, and the fabric feels substantial without being thick. I wore it in the pool three times this week and it still looks brand new.
J
Jennifer L.
Verified buyer
★★★★★
High-waist bottom is so flattering
I was nervous about ordering a high-waist bikini online, but this set exceeded my expectations. The bottom sits exactly where I wanted it and doesn’t roll down. The top provides good support even though I’m a D cup. I got so many compliments on the retro look at our resort.
A
Amanda K.
Verified buyer
★★★★☆
Great tankini for active days
I bought the tankini for a kayaking trip and it worked perfectly. The top stayed in place during paddling and didn’t ride up. The side tie is a nice detail that lets me adjust the length. My only wish is that it came in more color options, but the quality is excellent.
R
Rachel M.
Verified buyer
★★★★★
Holds up to chlorine exposure
I swim laps three mornings a week and this suit has held its color and shape for two months now. Other suits I’ve owned started fading after a few weeks. The fabric feels smooth and doesn’t get that rough texture some swimsuits develop. Well worth the investment.
D
Diana S.
Verified buyer
★★★★★
Mix-and-match sizing is genius
Being able to order different sizes for top and bottom changed everything for me. I finally have a two-piece that fits properly in both places. The ordering process was easy and both pieces arrived together. The fabric is thick enough to feel secure but stretchy enough to move comfortably.
V
Vanessa T.
Verified buyer
★★★★☆
Comfortable for all-day wear
I wore this suit from morning until evening during a beach vacation and never felt uncomfortable. The seams don’t chafe and the elastic doesn’t dig in. The built-in cups provide enough support that I didn’t need to wear anything underneath. I would buy another one in a different color.
M
Melissa R.
Verified buyer

Good to know

Your Alex Marie Swimsuit Questions Answered

Measure your bust, waist, and hip using a soft tape measure held snug but not tight. Compare your measurements to our size chart rather than relying on your usual dress size, since swimwear sizing depends on precise body dimensions. If you fall between sizes, we recommend sizing up for comfort—the spandex content provides plenty of hold without needing a tighter fit. For two-piece styles, you can order different sizes for top and bottom to achieve the best fit for your body.

Yes, all our swimsuits use chlorine-resistant fabrics designed to maintain color and elasticity through regular pool use. We test each design for at least 50 wash cycles before production to ensure it holds up to a full season of swimming. To maximize the lifespan of your suit, rinse it in cool fresh water after each wear to remove chlorine residue, then hand wash with mild detergent and lay flat to dry.

Hand washing is the best way to extend your swimsuit’s life, but if you need to machine wash while traveling, place the suit in the mesh laundry bag that comes with your purchase and use cold water on the delicate cycle. Skip the spin cycle if possible, or use the lowest spin setting. Never put a swimsuit in the dryer—the heat damages elastic fibers and causes fabric to lose its shape. Always lay the suit flat to air dry away from direct sunlight.

Our tankini tops include built-in shelf bras and come with removable cups already inserted. You can keep the cups in for extra shaping and coverage, or remove them if you prefer a lighter feel. The shelf bra itself provides structure and support even without the cups. We also include an extra pair of replacement cups with each tankini purchase in case the originals wear out or you want to try a different thickness.

We offer a 60-day fit guarantee on all Alex Marie swimsuits. If the size isn’t right, you can exchange it for a different size at no additional cost. The suit must be unworn with tags still attached, and you cover return shipping. This policy lets you try on the suit at home with your own swimwear and undergarments to ensure the fit works for you before committing to it.

The UPF 50+ protection in our swimsuit fabrics is woven into the material itself, not applied as a coating, so it lasts for the lifetime of the garment. The fabric blocks 98 percent of UV rays even when wet. This built-in protection doesn’t wash out or degrade with use. We still recommend applying sunscreen to exposed skin, but the swimsuit itself provides consistent sun protection every time you wear it.

Yes, we design our collection so pieces coordinate across different styles and seasons. A solid tankini top from one season pairs well with printed bottoms from another, and our two-piece separates are sold individually so you can build custom combinations. This approach lets you create multiple looks from fewer pieces and replace worn items without buying entirely new sets. Just check the size chart for each piece since fits may vary slightly between styles.

Explore the Full Swimwear Collection
From classic one-pieces to mix-and-match separates